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@@ -0,0 +1,939 @@
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+(function (global, factory) {
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+ typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
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+ typeof define === 'function' && define.amd ? define(['exports'], factory) :
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+ (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.sourceMap = {}));
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+})(this, (function (exports) { 'use strict';
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+
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+ const comma = ','.charCodeAt(0);
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+ const semicolon = ';'.charCodeAt(0);
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+ const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
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+ const intToChar = new Uint8Array(64); // 64 possible chars.
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+ const charToInteger = new Uint8Array(128); // z is 122 in ASCII
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+ for (let i = 0; i < chars.length; i++) {
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+ const c = chars.charCodeAt(i);
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+ charToInteger[c] = i;
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+ intToChar[i] = c;
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+ }
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+ // Provide a fallback for older environments.
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+ const td = typeof TextDecoder !== 'undefined'
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+ ? new TextDecoder()
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+ : typeof Buffer !== 'undefined'
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+ ? {
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+ decode(buf) {
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+ const out = Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength);
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+ return out.toString();
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+ },
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+ }
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+ : {
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+ decode(buf) {
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+ let out = '';
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+ for (let i = 0; i < buf.length; i++) {
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+ out += String.fromCharCode(buf[i]);
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+ }
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+ return out;
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+ },
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+ };
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+ function decode(mappings) {
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+ const state = new Int32Array(5);
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+ const decoded = [];
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+ let line = [];
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+ let sorted = true;
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+ let lastCol = 0;
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+ for (let i = 0; i < mappings.length;) {
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+ const c = mappings.charCodeAt(i);
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+ if (c === comma) {
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+ i++;
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+ }
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+ else if (c === semicolon) {
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+ state[0] = lastCol = 0;
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+ if (!sorted)
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+ sort(line);
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+ sorted = true;
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+ decoded.push(line);
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+ line = [];
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+ i++;
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+ }
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+ else {
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+ i = decodeInteger(mappings, i, state, 0); // generatedCodeColumn
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+ const col = state[0];
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+ if (col < lastCol)
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+ sorted = false;
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+ lastCol = col;
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+ if (!hasMoreSegments(mappings, i)) {
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+ line.push([col]);
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+ continue;
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+ }
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+ i = decodeInteger(mappings, i, state, 1); // sourceFileIndex
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+ i = decodeInteger(mappings, i, state, 2); // sourceCodeLine
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+ i = decodeInteger(mappings, i, state, 3); // sourceCodeColumn
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+ if (!hasMoreSegments(mappings, i)) {
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+ line.push([col, state[1], state[2], state[3]]);
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+ continue;
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+ }
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+ i = decodeInteger(mappings, i, state, 4); // nameIndex
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+ line.push([col, state[1], state[2], state[3], state[4]]);
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+ }
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+ }
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+ if (!sorted)
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+ sort(line);
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+ decoded.push(line);
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+ return decoded;
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+ }
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+ function decodeInteger(mappings, pos, state, j) {
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+ let value = 0;
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+ let shift = 0;
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+ let integer = 0;
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+ do {
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+ const c = mappings.charCodeAt(pos++);
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+ integer = charToInteger[c];
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+ value |= (integer & 31) << shift;
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+ shift += 5;
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+ } while (integer & 32);
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+ const shouldNegate = value & 1;
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+ value >>>= 1;
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+ if (shouldNegate) {
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+ value = -0x80000000 | -value;
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+ }
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+ state[j] += value;
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+ return pos;
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+ }
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+ function hasMoreSegments(mappings, i) {
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+ if (i >= mappings.length)
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+ return false;
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+ const c = mappings.charCodeAt(i);
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+ if (c === comma || c === semicolon)
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+ return false;
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+ return true;
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+ }
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+ function sort(line) {
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+ line.sort(sortComparator$1);
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+ }
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+ function sortComparator$1(a, b) {
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+ return a[0] - b[0];
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+ }
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+ function encode(decoded) {
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+ const state = new Int32Array(5);
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+ let buf = new Uint8Array(1024);
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+ let pos = 0;
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+ for (let i = 0; i < decoded.length; i++) {
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+ const line = decoded[i];
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+ if (i > 0) {
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+ buf = reserve(buf, pos, 1);
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+ buf[pos++] = semicolon;
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+ }
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+ if (line.length === 0)
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+ continue;
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+ state[0] = 0;
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+ for (let j = 0; j < line.length; j++) {
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+ const segment = line[j];
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+ // We can push up to 5 ints, each int can take at most 7 chars, and we
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+ // may push a comma.
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+ buf = reserve(buf, pos, 36);
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+ if (j > 0)
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+ buf[pos++] = comma;
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+ pos = encodeInteger(buf, pos, state, segment, 0); // generatedCodeColumn
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+ if (segment.length === 1)
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+ continue;
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+ pos = encodeInteger(buf, pos, state, segment, 1); // sourceFileIndex
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+ pos = encodeInteger(buf, pos, state, segment, 2); // sourceCodeLine
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+ pos = encodeInteger(buf, pos, state, segment, 3); // sourceCodeColumn
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+ if (segment.length === 4)
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+ continue;
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+ pos = encodeInteger(buf, pos, state, segment, 4); // nameIndex
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+ }
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+ }
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+ return td.decode(buf.subarray(0, pos));
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+ }
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+ function reserve(buf, pos, count) {
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+ if (buf.length > pos + count)
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+ return buf;
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+ const swap = new Uint8Array(buf.length * 2);
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+ swap.set(buf);
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+ return swap;
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+ }
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+ function encodeInteger(buf, pos, state, segment, j) {
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+ const next = segment[j];
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+ let num = next - state[j];
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+ state[j] = next;
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+ num = num < 0 ? (-num << 1) | 1 : num << 1;
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+ do {
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+ let clamped = num & 0b011111;
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+ num >>>= 5;
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+ if (num > 0)
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+ clamped |= 0b100000;
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+ buf[pos++] = intToChar[clamped];
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+ } while (num > 0);
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+ return pos;
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+ }
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+
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+ // Matches the scheme of a URL, eg "http://"
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+ const schemeRegex = /^[\w+.-]+:\/\//;
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+ /**
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+ * Matches the parts of a URL:
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+ * 1. Scheme, including ":", guaranteed.
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+ * 2. User/password, including "@", optional.
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+ * 3. Host, guaranteed.
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+ * 4. Port, including ":", optional.
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+ * 5. Path, including "/", optional.
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+ */
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+ const urlRegex = /^([\w+.-]+:)\/\/([^@/#?]*@)?([^:/#?]*)(:\d+)?(\/[^#?]*)?/;
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+ /**
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+ * File URLs are weird. They dont' need the regular `//` in the scheme, they may or may not start
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+ * with a leading `/`, they can have a domain (but only if they don't start with a Windows drive).
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+ *
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+ * 1. Host, optional.
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+ * 2. Path, which may inclue "/", guaranteed.
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+ */
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+ const fileRegex = /^file:(?:\/\/((?![a-z]:)[^/]*)?)?(\/?.*)/i;
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+ function isAbsoluteUrl(input) {
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+ return schemeRegex.test(input);
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+ }
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+ function isSchemeRelativeUrl(input) {
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+ return input.startsWith('//');
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+ }
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+ function isAbsolutePath(input) {
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+ return input.startsWith('/');
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+ }
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+ function isFileUrl(input) {
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+ return input.startsWith('file:');
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+ }
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+ function parseAbsoluteUrl(input) {
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+ const match = urlRegex.exec(input);
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+ return makeUrl(match[1], match[2] || '', match[3], match[4] || '', match[5] || '/');
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+ }
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+ function parseFileUrl(input) {
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+ const match = fileRegex.exec(input);
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+ const path = match[2];
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+ return makeUrl('file:', '', match[1] || '', '', isAbsolutePath(path) ? path : '/' + path);
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+ }
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+ function makeUrl(scheme, user, host, port, path) {
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+ return {
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+ scheme,
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+ user,
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+ host,
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+ port,
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+ path,
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+ relativePath: false,
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+ };
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+ }
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+ function parseUrl(input) {
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+ if (isSchemeRelativeUrl(input)) {
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+ const url = parseAbsoluteUrl('http:' + input);
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+ url.scheme = '';
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+ return url;
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+ }
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+ if (isAbsolutePath(input)) {
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+ const url = parseAbsoluteUrl('http://foo.com' + input);
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+ url.scheme = '';
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+ url.host = '';
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+ return url;
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+ }
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+ if (isFileUrl(input))
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+ return parseFileUrl(input);
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+ if (isAbsoluteUrl(input))
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+ return parseAbsoluteUrl(input);
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+ const url = parseAbsoluteUrl('http://foo.com/' + input);
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+ url.scheme = '';
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+ url.host = '';
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+ url.relativePath = true;
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+ return url;
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+ }
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+ function stripPathFilename(path) {
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+ // If a path ends with a parent directory "..", then it's a relative path with excess parent
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+ // paths. It's not a file, so we can't strip it.
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+ if (path.endsWith('/..'))
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+ return path;
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+ const index = path.lastIndexOf('/');
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+ return path.slice(0, index + 1);
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+ }
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+ function mergePaths(url, base) {
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+ // If we're not a relative path, then we're an absolute path, and it doesn't matter what base is.
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+ if (!url.relativePath)
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+ return;
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+ normalizePath(base);
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+ // If the path is just a "/", then it was an empty path to begin with (remember, we're a relative
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+ // path).
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+ if (url.path === '/') {
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+ url.path = base.path;
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+ }
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+ else {
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+ // Resolution happens relative to the base path's directory, not the file.
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+ url.path = stripPathFilename(base.path) + url.path;
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+ }
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+ // If the base path is absolute, then our path is now absolute too.
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+ url.relativePath = base.relativePath;
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+ }
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+ /**
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+ * The path can have empty directories "//", unneeded parents "foo/..", or current directory
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+ * "foo/.". We need to normalize to a standard representation.
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+ */
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+ function normalizePath(url) {
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+ const { relativePath } = url;
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+ const pieces = url.path.split('/');
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+ // We need to preserve the first piece always, so that we output a leading slash. The item at
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+ // pieces[0] is an empty string.
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+ let pointer = 1;
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+ // Positive is the number of real directories we've output, used for popping a parent directory.
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+ // Eg, "foo/bar/.." will have a positive 2, and we can decrement to be left with just "foo".
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+ let positive = 0;
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+ // We need to keep a trailing slash if we encounter an empty directory (eg, splitting "foo/" will
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+ // generate `["foo", ""]` pieces). And, if we pop a parent directory. But once we encounter a
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+ // real directory, we won't need to append, unless the other conditions happen again.
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+ let addTrailingSlash = false;
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+ for (let i = 1; i < pieces.length; i++) {
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+ const piece = pieces[i];
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+ // An empty directory, could be a trailing slash, or just a double "//" in the path.
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+ if (!piece) {
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+ addTrailingSlash = true;
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+ continue;
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+ }
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+ // If we encounter a real directory, then we don't need to append anymore.
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+ addTrailingSlash = false;
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+ // A current directory, which we can always drop.
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+ if (piece === '.')
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+ continue;
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+ // A parent directory, we need to see if there are any real directories we can pop. Else, we
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+ // have an excess of parents, and we'll need to keep the "..".
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+ if (piece === '..') {
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+ if (positive) {
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+ addTrailingSlash = true;
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+ positive--;
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+ pointer--;
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+ }
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+ else if (relativePath) {
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+ // If we're in a relativePath, then we need to keep the excess parents. Else, in an absolute
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+ // URL, protocol relative URL, or an absolute path, we don't need to keep excess.
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+ pieces[pointer++] = piece;
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+ }
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+ continue;
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+ }
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+ // We've encountered a real directory. Move it to the next insertion pointer, which accounts for
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+ // any popped or dropped directories.
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+ pieces[pointer++] = piece;
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+ positive++;
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+ }
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+ let path = '';
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+ for (let i = 1; i < pointer; i++) {
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+ path += '/' + pieces[i];
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+ }
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+ if (!path || (addTrailingSlash && !path.endsWith('/..'))) {
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+ path += '/';
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+ }
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+ url.path = path;
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+ }
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+ /**
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+ * Attempts to resolve `input` URL/path relative to `base`.
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+ */
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+ function resolve$1(input, base) {
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+ if (!input && !base)
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+ return '';
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+ const url = parseUrl(input);
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+ // If we have a base, and the input isn't already an absolute URL, then we need to merge.
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+ if (base && !url.scheme) {
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+ const baseUrl = parseUrl(base);
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+ url.scheme = baseUrl.scheme;
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+ // If there's no host, then we were just a path.
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+ if (!url.host) {
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+ // The host, user, and port are joined, you can't copy one without the others.
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+ url.user = baseUrl.user;
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+ url.host = baseUrl.host;
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+ url.port = baseUrl.port;
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+ }
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+ mergePaths(url, baseUrl);
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+ }
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+ normalizePath(url);
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+ // If the input (and base, if there was one) are both relative, then we need to output a relative.
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+ if (url.relativePath) {
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+ // The first char is always a "/".
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+ const path = url.path.slice(1);
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+ if (!path)
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+ return '.';
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+ // If base started with a leading ".", or there is no base and input started with a ".", then we
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+ // need to ensure that the relative path starts with a ".". We don't know if relative starts
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+ // with a "..", though, so check before prepending.
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+ const keepRelative = (base || input).startsWith('.');
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+ return !keepRelative || path.startsWith('.') ? path : './' + path;
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+ }
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+ // If there's no host (and no scheme/user/port), then we need to output an absolute path.
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+ if (!url.scheme && !url.host)
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+ return url.path;
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+ // We're outputting either an absolute URL, or a protocol relative one.
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+ return `${url.scheme}//${url.user}${url.host}${url.port}${url.path}`;
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+ }
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+
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+ function resolve(input, base) {
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+ // The base is always treated as a directory, if it's not empty.
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+ // https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327
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+ // https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401
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+ if (base && !base.endsWith('/'))
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+ base += '/';
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+ return resolve$1(input, base);
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+ }
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+
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+ /**
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+ * Removes everything after the last "/", but leaves the slash.
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+ */
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+ function stripFilename(path) {
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+ if (!path)
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+ return '';
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+ const index = path.lastIndexOf('/');
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+ return path.slice(0, index + 1);
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+ }
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+
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+ const COLUMN$1 = 0;
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+ const SOURCES_INDEX$1 = 1;
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+ const SOURCE_LINE$1 = 2;
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+ const SOURCE_COLUMN$1 = 3;
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+ const NAMES_INDEX$1 = 4;
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+
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+ function maybeSort(mappings, owned) {
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+ const unsortedIndex = nextUnsortedSegmentLine(mappings, 0);
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+ if (unsortedIndex === mappings.length)
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+ return mappings;
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|
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+ // If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If
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|
|
+ // not, we do not want to modify the consumer's input array.
|
|
|
+ if (!owned)
|
|
|
+ mappings = mappings.slice();
|
|
|
+ for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) {
|
|
|
+ mappings[i] = sortSegments(mappings[i], owned);
|
|
|
+ }
|
|
|
+ return mappings;
|
|
|
+ }
|
|
|
+ function nextUnsortedSegmentLine(mappings, start) {
|
|
|
+ for (let i = start; i < mappings.length; i++) {
|
|
|
+ if (!isSorted(mappings[i]))
|
|
|
+ return i;
|
|
|
+ }
|
|
|
+ return mappings.length;
|
|
|
+ }
|
|
|
+ function isSorted(line) {
|
|
|
+ for (let j = 1; j < line.length; j++) {
|
|
|
+ if (line[j][COLUMN$1] < line[j - 1][COLUMN$1]) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ function sortSegments(line, owned) {
|
|
|
+ if (!owned)
|
|
|
+ line = line.slice();
|
|
|
+ return line.sort(sortComparator);
|
|
|
+ }
|
|
|
+ function sortComparator(a, b) {
|
|
|
+ return a[COLUMN$1] - b[COLUMN$1];
|
|
|
+ }
|
|
|
+
|
|
|
+ let found = false;
|
|
|
+ /**
|
|
|
+ * A binary search implementation that returns the index if a match is found.
|
|
|
+ * If no match is found, then the left-index (the index associated with the item that comes just
|
|
|
+ * before the desired index) is returned. To maintain proper sort order, a splice would happen at
|
|
|
+ * the next index:
|
|
|
+ *
|
|
|
+ * ```js
|
|
|
+ * const array = [1, 3];
|
|
|
+ * const needle = 2;
|
|
|
+ * const index = binarySearch(array, needle, (item, needle) => item - needle);
|
|
|
+ *
|
|
|
+ * assert.equal(index, 0);
|
|
|
+ * array.splice(index + 1, 0, needle);
|
|
|
+ * assert.deepEqual(array, [1, 2, 3]);
|
|
|
+ * ```
|
|
|
+ */
|
|
|
+ function binarySearch(haystack, needle, low, high) {
|
|
|
+ while (low <= high) {
|
|
|
+ const mid = low + ((high - low) >> 1);
|
|
|
+ const cmp = haystack[mid][COLUMN$1] - needle;
|
|
|
+ if (cmp === 0) {
|
|
|
+ found = true;
|
|
|
+ return mid;
|
|
|
+ }
|
|
|
+ if (cmp < 0) {
|
|
|
+ low = mid + 1;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ high = mid - 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ found = false;
|
|
|
+ return low - 1;
|
|
|
+ }
|
|
|
+ function upperBound(haystack, needle, index) {
|
|
|
+ for (let i = index + 1; i < haystack.length; i++, index++) {
|
|
|
+ if (haystack[i][COLUMN$1] !== needle)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return index;
|
|
|
+ }
|
|
|
+ function lowerBound(haystack, needle, index) {
|
|
|
+ for (let i = index - 1; i >= 0; i--, index--) {
|
|
|
+ if (haystack[i][COLUMN$1] !== needle)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return index;
|
|
|
+ }
|
|
|
+ function memoizedState() {
|
|
|
+ return {
|
|
|
+ lastKey: -1,
|
|
|
+ lastNeedle: -1,
|
|
|
+ lastIndex: -1,
|
|
|
+ };
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * This overly complicated beast is just to record the last tested line/column and the resulting
|
|
|
+ * index, allowing us to skip a few tests if mappings are monotonically increasing.
|
|
|
+ */
|
|
|
+ function memoizedBinarySearch(haystack, needle, state, key) {
|
|
|
+ const { lastKey, lastNeedle, lastIndex } = state;
|
|
|
+ let low = 0;
|
|
|
+ let high = haystack.length - 1;
|
|
|
+ if (key === lastKey) {
|
|
|
+ if (needle === lastNeedle) {
|
|
|
+ found = lastIndex !== -1 && haystack[lastIndex][COLUMN$1] === needle;
|
|
|
+ return lastIndex;
|
|
|
+ }
|
|
|
+ if (needle >= lastNeedle) {
|
|
|
+ // lastIndex may be -1 if the previous needle was not found.
|
|
|
+ low = lastIndex === -1 ? 0 : lastIndex;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ high = lastIndex;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ state.lastKey = key;
|
|
|
+ state.lastNeedle = needle;
|
|
|
+ return (state.lastIndex = binarySearch(haystack, needle, low, high));
|
|
|
+ }
|
|
|
+
|
|
|
+ const AnyMap = function (map, mapUrl) {
|
|
|
+ const parsed = typeof map === 'string' ? JSON.parse(map) : map;
|
|
|
+ if (!('sections' in parsed))
|
|
|
+ return new TraceMap(parsed, mapUrl);
|
|
|
+ const mappings = [];
|
|
|
+ const sources = [];
|
|
|
+ const sourcesContent = [];
|
|
|
+ const names = [];
|
|
|
+ const { sections } = parsed;
|
|
|
+ let i = 0;
|
|
|
+ for (; i < sections.length - 1; i++) {
|
|
|
+ const no = sections[i + 1].offset;
|
|
|
+ addSection(sections[i], mapUrl, mappings, sources, sourcesContent, names, no.line, no.column);
|
|
|
+ }
|
|
|
+ if (sections.length > 0) {
|
|
|
+ addSection(sections[i], mapUrl, mappings, sources, sourcesContent, names, Infinity, Infinity);
|
|
|
+ }
|
|
|
+ const joined = {
|
|
|
+ version: 3,
|
|
|
+ file: parsed.file,
|
|
|
+ names,
|
|
|
+ sources,
|
|
|
+ sourcesContent,
|
|
|
+ mappings,
|
|
|
+ };
|
|
|
+ return presortedDecodedMap(joined);
|
|
|
+ };
|
|
|
+ function addSection(section, mapUrl, mappings, sources, sourcesContent, names, stopLine, stopColumn) {
|
|
|
+ const map = AnyMap(section.map, mapUrl);
|
|
|
+ const { line: lineOffset, column: columnOffset } = section.offset;
|
|
|
+ const sourcesOffset = sources.length;
|
|
|
+ const namesOffset = names.length;
|
|
|
+ const decoded = decodedMappings(map);
|
|
|
+ const { resolvedSources } = map;
|
|
|
+ append(sources, resolvedSources);
|
|
|
+ append(sourcesContent, map.sourcesContent || fillSourcesContent(resolvedSources.length));
|
|
|
+ append(names, map.names);
|
|
|
+ // If this section jumps forwards several lines, we need to add lines to the output mappings catch up.
|
|
|
+ for (let i = mappings.length; i <= lineOffset; i++)
|
|
|
+ mappings.push([]);
|
|
|
+ // We can only add so many lines before we step into the range that the next section's map
|
|
|
+ // controls. When we get to the last line, then we'll start checking the segments to see if
|
|
|
+ // they've crossed into the column range.
|
|
|
+ const stopI = stopLine - lineOffset;
|
|
|
+ const len = Math.min(decoded.length, stopI + 1);
|
|
|
+ for (let i = 0; i < len; i++) {
|
|
|
+ const line = decoded[i];
|
|
|
+ // On the 0th loop, the line will already exist due to a previous section, or the line catch up
|
|
|
+ // loop above.
|
|
|
+ const out = i === 0 ? mappings[lineOffset] : (mappings[lineOffset + i] = []);
|
|
|
+ // On the 0th loop, the section's column offset shifts us forward. On all other lines (since the
|
|
|
+ // map can be multiple lines), it doesn't.
|
|
|
+ const cOffset = i === 0 ? columnOffset : 0;
|
|
|
+ for (let j = 0; j < line.length; j++) {
|
|
|
+ const seg = line[j];
|
|
|
+ const column = cOffset + seg[COLUMN$1];
|
|
|
+ // If this segment steps into the column range that the next section's map controls, we need
|
|
|
+ // to stop early.
|
|
|
+ if (i === stopI && column >= stopColumn)
|
|
|
+ break;
|
|
|
+ if (seg.length === 1) {
|
|
|
+ out.push([column]);
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX$1];
|
|
|
+ const sourceLine = seg[SOURCE_LINE$1];
|
|
|
+ const sourceColumn = seg[SOURCE_COLUMN$1];
|
|
|
+ if (seg.length === 4) {
|
|
|
+ out.push([column, sourcesIndex, sourceLine, sourceColumn]);
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ out.push([column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX$1]]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ function append(arr, other) {
|
|
|
+ for (let i = 0; i < other.length; i++)
|
|
|
+ arr.push(other[i]);
|
|
|
+ }
|
|
|
+ // Sourcemaps don't need to have sourcesContent, and if they don't, we need to create an array of
|
|
|
+ // equal length to the sources. This is because the sources and sourcesContent are paired arrays,
|
|
|
+ // where `sourcesContent[i]` is the content of the `sources[i]` file. If we didn't, then joined
|
|
|
+ // sourcemap would desynchronize the sources/contents.
|
|
|
+ function fillSourcesContent(len) {
|
|
|
+ const sourcesContent = [];
|
|
|
+ for (let i = 0; i < len; i++)
|
|
|
+ sourcesContent[i] = null;
|
|
|
+ return sourcesContent;
|
|
|
+ }
|
|
|
+
|
|
|
+ const INVALID_ORIGINAL_MAPPING = Object.freeze({
|
|
|
+ source: null,
|
|
|
+ line: null,
|
|
|
+ column: null,
|
|
|
+ name: null,
|
|
|
+ });
|
|
|
+ Object.freeze({
|
|
|
+ line: null,
|
|
|
+ column: null,
|
|
|
+ });
|
|
|
+ const LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)';
|
|
|
+ const COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)';
|
|
|
+ const LEAST_UPPER_BOUND = -1;
|
|
|
+ const GREATEST_LOWER_BOUND = 1;
|
|
|
+ /**
|
|
|
+ * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field.
|
|
|
+ */
|
|
|
+ let decodedMappings;
|
|
|
+ /**
|
|
|
+ * A higher-level API to find the source/line/column associated with a generated line/column
|
|
|
+ * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in
|
|
|
+ * `source-map` library.
|
|
|
+ */
|
|
|
+ let originalPositionFor;
|
|
|
+ /**
|
|
|
+ * A helper that skips sorting of the input map's mappings array, which can be expensive for larger
|
|
|
+ * maps.
|
|
|
+ */
|
|
|
+ let presortedDecodedMap;
|
|
|
+ class TraceMap {
|
|
|
+ constructor(map, mapUrl) {
|
|
|
+ this._decodedMemo = memoizedState();
|
|
|
+ this._bySources = undefined;
|
|
|
+ this._bySourceMemos = undefined;
|
|
|
+ const isString = typeof map === 'string';
|
|
|
+ if (!isString && map.constructor === TraceMap)
|
|
|
+ return map;
|
|
|
+ const parsed = (isString ? JSON.parse(map) : map);
|
|
|
+ const { version, file, names, sourceRoot, sources, sourcesContent } = parsed;
|
|
|
+ this.version = version;
|
|
|
+ this.file = file;
|
|
|
+ this.names = names;
|
|
|
+ this.sourceRoot = sourceRoot;
|
|
|
+ this.sources = sources;
|
|
|
+ this.sourcesContent = sourcesContent;
|
|
|
+ if (sourceRoot || mapUrl) {
|
|
|
+ const from = resolve(sourceRoot || '', stripFilename(mapUrl));
|
|
|
+ this.resolvedSources = sources.map((s) => resolve(s || '', from));
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ this.resolvedSources = sources.map((s) => s || '');
|
|
|
+ }
|
|
|
+ const { mappings } = parsed;
|
|
|
+ if (typeof mappings === 'string') {
|
|
|
+ this._encoded = mappings;
|
|
|
+ this._decoded = undefined;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ this._encoded = undefined;
|
|
|
+ this._decoded = maybeSort(mappings, isString);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ (() => {
|
|
|
+ decodedMappings = (map) => {
|
|
|
+ return (map._decoded || (map._decoded = decode(map._encoded)));
|
|
|
+ };
|
|
|
+ originalPositionFor = (map, { line, column, bias }) => {
|
|
|
+ line--;
|
|
|
+ if (line < 0)
|
|
|
+ throw new Error(LINE_GTR_ZERO);
|
|
|
+ if (column < 0)
|
|
|
+ throw new Error(COL_GTR_EQ_ZERO);
|
|
|
+ const decoded = decodedMappings(map);
|
|
|
+ // It's common for parent source maps to have pointers to lines that have no
|
|
|
+ // mapping (like a "//# sourceMappingURL=") at the end of the child file.
|
|
|
+ if (line >= decoded.length)
|
|
|
+ return INVALID_ORIGINAL_MAPPING;
|
|
|
+ const segment = traceSegmentInternal(decoded[line], map._decodedMemo, line, column, bias || GREATEST_LOWER_BOUND);
|
|
|
+ if (segment == null)
|
|
|
+ return INVALID_ORIGINAL_MAPPING;
|
|
|
+ if (segment.length == 1)
|
|
|
+ return INVALID_ORIGINAL_MAPPING;
|
|
|
+ const { names, resolvedSources } = map;
|
|
|
+ return {
|
|
|
+ source: resolvedSources[segment[SOURCES_INDEX$1]],
|
|
|
+ line: segment[SOURCE_LINE$1] + 1,
|
|
|
+ column: segment[SOURCE_COLUMN$1],
|
|
|
+ name: segment.length === 5 ? names[segment[NAMES_INDEX$1]] : null,
|
|
|
+ };
|
|
|
+ };
|
|
|
+ presortedDecodedMap = (map, mapUrl) => {
|
|
|
+ const clone = Object.assign({}, map);
|
|
|
+ clone.mappings = [];
|
|
|
+ const tracer = new TraceMap(clone, mapUrl);
|
|
|
+ tracer._decoded = map.mappings;
|
|
|
+ return tracer;
|
|
|
+ };
|
|
|
+ })();
|
|
|
+ function traceSegmentInternal(segments, memo, line, column, bias) {
|
|
|
+ let index = memoizedBinarySearch(segments, column, memo, line);
|
|
|
+ if (found) {
|
|
|
+ index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index);
|
|
|
+ }
|
|
|
+ else if (bias === LEAST_UPPER_BOUND)
|
|
|
+ index++;
|
|
|
+ if (index === -1 || index === segments.length)
|
|
|
+ return null;
|
|
|
+ return segments[index];
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Gets the index associated with `key` in the backing array, if it is already present.
|
|
|
+ */
|
|
|
+ let get;
|
|
|
+ /**
|
|
|
+ * Puts `key` into the backing array, if it is not already present. Returns
|
|
|
+ * the index of the `key` in the backing array.
|
|
|
+ */
|
|
|
+ let put;
|
|
|
+ /**
|
|
|
+ * SetArray acts like a `Set` (allowing only one occurrence of a string `key`), but provides the
|
|
|
+ * index of the `key` in the backing array.
|
|
|
+ *
|
|
|
+ * This is designed to allow synchronizing a second array with the contents of the backing array,
|
|
|
+ * like how in a sourcemap `sourcesContent[i]` is the source content associated with `source[i]`,
|
|
|
+ * and there are never duplicates.
|
|
|
+ */
|
|
|
+ class SetArray {
|
|
|
+ constructor() {
|
|
|
+ this._indexes = { __proto__: null };
|
|
|
+ this.array = [];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ (() => {
|
|
|
+ get = (strarr, key) => strarr._indexes[key];
|
|
|
+ put = (strarr, key) => {
|
|
|
+ // The key may or may not be present. If it is present, it's a number.
|
|
|
+ const index = get(strarr, key);
|
|
|
+ if (index !== undefined)
|
|
|
+ return index;
|
|
|
+ const { array, _indexes: indexes } = strarr;
|
|
|
+ return (indexes[key] = array.push(key) - 1);
|
|
|
+ };
|
|
|
+ })();
|
|
|
+
|
|
|
+ const COLUMN = 0;
|
|
|
+ const SOURCES_INDEX = 1;
|
|
|
+ const SOURCE_LINE = 2;
|
|
|
+ const SOURCE_COLUMN = 3;
|
|
|
+ const NAMES_INDEX = 4;
|
|
|
+
|
|
|
+ const NO_NAME = -1;
|
|
|
+ /**
|
|
|
+ * Same as `addMapping`, but will only add the mapping if it generates useful information in the
|
|
|
+ * resulting map. This only works correctly if mappings are added **in order**, meaning you should
|
|
|
+ * not add a mapping with a lower generated line/column than one that came before.
|
|
|
+ */
|
|
|
+ let maybeAddMapping;
|
|
|
+ /**
|
|
|
+ * Adds/removes the content of the source file to the source map.
|
|
|
+ */
|
|
|
+ let setSourceContent;
|
|
|
+ /**
|
|
|
+ * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects
|
|
|
+ * a sourcemap, or to JSON.stringify.
|
|
|
+ */
|
|
|
+ let toDecodedMap;
|
|
|
+ /**
|
|
|
+ * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects
|
|
|
+ * a sourcemap, or to JSON.stringify.
|
|
|
+ */
|
|
|
+ let toEncodedMap;
|
|
|
+ // This split declaration is only so that terser can elminiate the static initialization block.
|
|
|
+ let addSegmentInternal;
|
|
|
+ /**
|
|
|
+ * Provides the state to generate a sourcemap.
|
|
|
+ */
|
|
|
+ class GenMapping {
|
|
|
+ constructor({ file, sourceRoot } = {}) {
|
|
|
+ this._names = new SetArray();
|
|
|
+ this._sources = new SetArray();
|
|
|
+ this._sourcesContent = [];
|
|
|
+ this._mappings = [];
|
|
|
+ this.file = file;
|
|
|
+ this.sourceRoot = sourceRoot;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ (() => {
|
|
|
+ maybeAddMapping = (map, mapping) => {
|
|
|
+ return addMappingInternal(true, map, mapping);
|
|
|
+ };
|
|
|
+ setSourceContent = (map, source, content) => {
|
|
|
+ const { _sources: sources, _sourcesContent: sourcesContent } = map;
|
|
|
+ sourcesContent[put(sources, source)] = content;
|
|
|
+ };
|
|
|
+ toDecodedMap = (map) => {
|
|
|
+ const { file, sourceRoot, _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
|
|
|
+ removeEmptyFinalLines(mappings);
|
|
|
+ return {
|
|
|
+ version: 3,
|
|
|
+ file: file || undefined,
|
|
|
+ names: names.array,
|
|
|
+ sourceRoot: sourceRoot || undefined,
|
|
|
+ sources: sources.array,
|
|
|
+ sourcesContent,
|
|
|
+ mappings,
|
|
|
+ };
|
|
|
+ };
|
|
|
+ toEncodedMap = (map) => {
|
|
|
+ const decoded = toDecodedMap(map);
|
|
|
+ return Object.assign(Object.assign({}, decoded), { mappings: encode(decoded.mappings) });
|
|
|
+ };
|
|
|
+ // Internal helpers
|
|
|
+ addSegmentInternal = (skipable, map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {
|
|
|
+ const { _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
|
|
|
+ const line = getLine(mappings, genLine);
|
|
|
+ const index = getColumnIndex(line, genColumn);
|
|
|
+ if (!source) {
|
|
|
+ if (skipable && skipSourceless(line, index))
|
|
|
+ return;
|
|
|
+ return insert(line, index, [genColumn]);
|
|
|
+ }
|
|
|
+ const sourcesIndex = put(sources, source);
|
|
|
+ const namesIndex = name ? put(names, name) : NO_NAME;
|
|
|
+ if (sourcesIndex === sourcesContent.length)
|
|
|
+ sourcesContent[sourcesIndex] = null;
|
|
|
+ if (skipable && skipSource(line, index, sourcesIndex, sourceLine, sourceColumn, namesIndex)) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ return insert(line, index, name
|
|
|
+ ? [genColumn, sourcesIndex, sourceLine, sourceColumn, namesIndex]
|
|
|
+ : [genColumn, sourcesIndex, sourceLine, sourceColumn]);
|
|
|
+ };
|
|
|
+ })();
|
|
|
+ function getLine(mappings, index) {
|
|
|
+ for (let i = mappings.length; i <= index; i++) {
|
|
|
+ mappings[i] = [];
|
|
|
+ }
|
|
|
+ return mappings[index];
|
|
|
+ }
|
|
|
+ function getColumnIndex(line, genColumn) {
|
|
|
+ let index = line.length;
|
|
|
+ for (let i = index - 1; i >= 0; index = i--) {
|
|
|
+ const current = line[i];
|
|
|
+ if (genColumn >= current[COLUMN])
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return index;
|
|
|
+ }
|
|
|
+ function insert(array, index, value) {
|
|
|
+ for (let i = array.length; i > index; i--) {
|
|
|
+ array[i] = array[i - 1];
|
|
|
+ }
|
|
|
+ array[index] = value;
|
|
|
+ }
|
|
|
+ function removeEmptyFinalLines(mappings) {
|
|
|
+ const { length } = mappings;
|
|
|
+ let len = length;
|
|
|
+ for (let i = len - 1; i >= 0; len = i, i--) {
|
|
|
+ if (mappings[i].length > 0)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (len < length)
|
|
|
+ mappings.length = len;
|
|
|
+ }
|
|
|
+ function skipSourceless(line, index) {
|
|
|
+ // The start of a line is already sourceless, so adding a sourceless segment to the beginning
|
|
|
+ // doesn't generate any useful information.
|
|
|
+ if (index === 0)
|
|
|
+ return true;
|
|
|
+ const prev = line[index - 1];
|
|
|
+ // If the previous segment is also sourceless, then adding another sourceless segment doesn't
|
|
|
+ // genrate any new information. Else, this segment will end the source/named segment and point to
|
|
|
+ // a sourceless position, which is useful.
|
|
|
+ return prev.length === 1;
|
|
|
+ }
|
|
|
+ function skipSource(line, index, sourcesIndex, sourceLine, sourceColumn, namesIndex) {
|
|
|
+ // A source/named segment at the start of a line gives position at that genColumn
|
|
|
+ if (index === 0)
|
|
|
+ return false;
|
|
|
+ const prev = line[index - 1];
|
|
|
+ // If the previous segment is sourceless, then we're transitioning to a source.
|
|
|
+ if (prev.length === 1)
|
|
|
+ return false;
|
|
|
+ // If the previous segment maps to the exact same source position, then this segment doesn't
|
|
|
+ // provide any new position information.
|
|
|
+ return (sourcesIndex === prev[SOURCES_INDEX] &&
|
|
|
+ sourceLine === prev[SOURCE_LINE] &&
|
|
|
+ sourceColumn === prev[SOURCE_COLUMN] &&
|
|
|
+ namesIndex === (prev.length === 5 ? prev[NAMES_INDEX] : NO_NAME));
|
|
|
+ }
|
|
|
+ function addMappingInternal(skipable, map, mapping) {
|
|
|
+ const { generated, source, original, name } = mapping;
|
|
|
+ if (!source) {
|
|
|
+ return addSegmentInternal(skipable, map, generated.line - 1, generated.column, null, null, null, null);
|
|
|
+ }
|
|
|
+ const s = source;
|
|
|
+ return addSegmentInternal(skipable, map, generated.line - 1, generated.column, s, original.line - 1, original.column, name);
|
|
|
+ }
|
|
|
+
|
|
|
+ class SourceMapConsumer {
|
|
|
+ constructor(map, mapUrl) {
|
|
|
+ const trace = (this._map = new AnyMap(map, mapUrl));
|
|
|
+ this.file = trace.file;
|
|
|
+ this.names = trace.names;
|
|
|
+ this.sourceRoot = trace.sourceRoot;
|
|
|
+ this.sources = trace.resolvedSources;
|
|
|
+ this.sourcesContent = trace.sourcesContent;
|
|
|
+ }
|
|
|
+ originalPositionFor(needle) {
|
|
|
+ return originalPositionFor(this._map, needle);
|
|
|
+ }
|
|
|
+ destroy() {
|
|
|
+ // noop.
|
|
|
+ }
|
|
|
+ }
|
|
|
+ class SourceMapGenerator {
|
|
|
+ constructor(opts) {
|
|
|
+ this._map = new GenMapping(opts);
|
|
|
+ }
|
|
|
+ addMapping(mapping) {
|
|
|
+ maybeAddMapping(this._map, mapping);
|
|
|
+ }
|
|
|
+ setSourceContent(source, content) {
|
|
|
+ setSourceContent(this._map, source, content);
|
|
|
+ }
|
|
|
+ toJSON() {
|
|
|
+ return toEncodedMap(this._map);
|
|
|
+ }
|
|
|
+ toDecodedMap() {
|
|
|
+ return toDecodedMap(this._map);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ exports.SourceMapConsumer = SourceMapConsumer;
|
|
|
+ exports.SourceMapGenerator = SourceMapGenerator;
|
|
|
+
|
|
|
+ Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
+
|
|
|
+}));
|
|
|
+//# sourceMappingURL=source-map.umd.js.map
|