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@@ -0,0 +1,439 @@
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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.sourcemapCodec = {}));
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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 charToInt = 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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+ intToChar[i] = c;
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+ charToInt[c] = i;
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+ }
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+ function decodeInteger(reader, relative) {
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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 = reader.next();
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+ integer = charToInt[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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+ return relative + value;
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+ }
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+ function encodeInteger(builder, num, relative) {
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+ let delta = num - relative;
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+ delta = delta < 0 ? (-delta << 1) | 1 : delta << 1;
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+ do {
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+ let clamped = delta & 0b011111;
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+ delta >>>= 5;
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+ if (delta > 0)
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+ clamped |= 0b100000;
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+ builder.write(intToChar[clamped]);
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+ } while (delta > 0);
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+ return num;
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+ }
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+ function hasMoreVlq(reader, max) {
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+ if (reader.pos >= max)
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+ return false;
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+ return reader.peek() !== comma;
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+ }
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+
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+ const bufLength = 1024 * 16;
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+ // Provide a fallback for older environments.
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+ const td = typeof TextDecoder !== 'undefined'
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+ ? /* #__PURE__ */ 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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+ class StringWriter {
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+ constructor() {
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+ this.pos = 0;
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+ this.out = '';
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+ this.buffer = new Uint8Array(bufLength);
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+ }
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+ write(v) {
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+ const { buffer } = this;
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+ buffer[this.pos++] = v;
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+ if (this.pos === bufLength) {
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+ this.out += td.decode(buffer);
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+ this.pos = 0;
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+ }
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+ }
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+ flush() {
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+ const { buffer, out, pos } = this;
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+ return pos > 0 ? out + td.decode(buffer.subarray(0, pos)) : out;
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+ }
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+ }
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+ class StringReader {
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+ constructor(buffer) {
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+ this.pos = 0;
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+ this.buffer = buffer;
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+ }
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+ next() {
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+ return this.buffer.charCodeAt(this.pos++);
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+ }
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+ peek() {
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+ return this.buffer.charCodeAt(this.pos);
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+ }
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+ indexOf(char) {
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+ const { buffer, pos } = this;
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+ const idx = buffer.indexOf(char, pos);
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+ return idx === -1 ? buffer.length : idx;
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+ }
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+ }
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+
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+ const EMPTY = [];
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+ function decodeOriginalScopes(input) {
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+ const { length } = input;
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+ const reader = new StringReader(input);
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+ const scopes = [];
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+ const stack = [];
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+ let line = 0;
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+ for (; reader.pos < length; reader.pos++) {
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+ line = decodeInteger(reader, line);
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+ const column = decodeInteger(reader, 0);
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+ if (!hasMoreVlq(reader, length)) {
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+ const last = stack.pop();
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+ last[2] = line;
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+ last[3] = column;
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+ continue;
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+ }
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+ const kind = decodeInteger(reader, 0);
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+ const fields = decodeInteger(reader, 0);
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+ const hasName = fields & 0b0001;
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+ const scope = (hasName ? [line, column, 0, 0, kind, decodeInteger(reader, 0)] : [line, column, 0, 0, kind]);
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+ let vars = EMPTY;
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+ if (hasMoreVlq(reader, length)) {
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+ vars = [];
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+ do {
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+ const varsIndex = decodeInteger(reader, 0);
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+ vars.push(varsIndex);
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+ } while (hasMoreVlq(reader, length));
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+ }
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+ scope.vars = vars;
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+ scopes.push(scope);
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+ stack.push(scope);
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+ }
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+ return scopes;
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+ }
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+ function encodeOriginalScopes(scopes) {
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+ const writer = new StringWriter();
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+ for (let i = 0; i < scopes.length;) {
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+ i = _encodeOriginalScopes(scopes, i, writer, [0]);
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+ }
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+ return writer.flush();
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+ }
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+ function _encodeOriginalScopes(scopes, index, writer, state) {
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+ const scope = scopes[index];
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+ const { 0: startLine, 1: startColumn, 2: endLine, 3: endColumn, 4: kind, vars } = scope;
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+ if (index > 0)
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+ writer.write(comma);
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+ state[0] = encodeInteger(writer, startLine, state[0]);
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+ encodeInteger(writer, startColumn, 0);
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+ encodeInteger(writer, kind, 0);
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+ const fields = scope.length === 6 ? 0b0001 : 0;
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+ encodeInteger(writer, fields, 0);
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+ if (scope.length === 6)
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+ encodeInteger(writer, scope[5], 0);
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+ for (const v of vars) {
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+ encodeInteger(writer, v, 0);
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+ }
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+ for (index++; index < scopes.length;) {
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+ const next = scopes[index];
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+ const { 0: l, 1: c } = next;
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+ if (l > endLine || (l === endLine && c >= endColumn)) {
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+ break;
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+ }
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+ index = _encodeOriginalScopes(scopes, index, writer, state);
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+ }
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+ writer.write(comma);
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+ state[0] = encodeInteger(writer, endLine, state[0]);
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+ encodeInteger(writer, endColumn, 0);
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+ return index;
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+ }
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+ function decodeGeneratedRanges(input) {
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+ const { length } = input;
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+ const reader = new StringReader(input);
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+ const ranges = [];
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+ const stack = [];
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+ let genLine = 0;
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+ let definitionSourcesIndex = 0;
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+ let definitionScopeIndex = 0;
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+ let callsiteSourcesIndex = 0;
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+ let callsiteLine = 0;
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+ let callsiteColumn = 0;
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+ let bindingLine = 0;
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+ let bindingColumn = 0;
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+ do {
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+ const semi = reader.indexOf(';');
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+ let genColumn = 0;
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+ for (; reader.pos < semi; reader.pos++) {
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+ genColumn = decodeInteger(reader, genColumn);
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+ if (!hasMoreVlq(reader, semi)) {
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+ const last = stack.pop();
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+ last[2] = genLine;
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+ last[3] = genColumn;
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+ continue;
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+ }
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+ const fields = decodeInteger(reader, 0);
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+ const hasDefinition = fields & 0b0001;
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+ const hasCallsite = fields & 0b0010;
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+ const hasScope = fields & 0b0100;
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+ let callsite = null;
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+ let bindings = EMPTY;
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+ let range;
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+ if (hasDefinition) {
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+ const defSourcesIndex = decodeInteger(reader, definitionSourcesIndex);
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+ definitionScopeIndex = decodeInteger(reader, definitionSourcesIndex === defSourcesIndex ? definitionScopeIndex : 0);
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+ definitionSourcesIndex = defSourcesIndex;
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+ range = [genLine, genColumn, 0, 0, defSourcesIndex, definitionScopeIndex];
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+ }
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+ else {
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+ range = [genLine, genColumn, 0, 0];
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+ }
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+ range.isScope = !!hasScope;
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+ if (hasCallsite) {
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+ const prevCsi = callsiteSourcesIndex;
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+ const prevLine = callsiteLine;
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+ callsiteSourcesIndex = decodeInteger(reader, callsiteSourcesIndex);
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+ const sameSource = prevCsi === callsiteSourcesIndex;
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+ callsiteLine = decodeInteger(reader, sameSource ? callsiteLine : 0);
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+ callsiteColumn = decodeInteger(reader, sameSource && prevLine === callsiteLine ? callsiteColumn : 0);
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+ callsite = [callsiteSourcesIndex, callsiteLine, callsiteColumn];
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+ }
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+ range.callsite = callsite;
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+ if (hasMoreVlq(reader, semi)) {
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+ bindings = [];
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+ do {
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+ bindingLine = genLine;
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+ bindingColumn = genColumn;
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+ const expressionsCount = decodeInteger(reader, 0);
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+ let expressionRanges;
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+ if (expressionsCount < -1) {
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+ expressionRanges = [[decodeInteger(reader, 0)]];
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+ for (let i = -1; i > expressionsCount; i--) {
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+ const prevBl = bindingLine;
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+ bindingLine = decodeInteger(reader, bindingLine);
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+ bindingColumn = decodeInteger(reader, bindingLine === prevBl ? bindingColumn : 0);
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+ const expression = decodeInteger(reader, 0);
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+ expressionRanges.push([expression, bindingLine, bindingColumn]);
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+ }
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+ }
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+ else {
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+ expressionRanges = [[expressionsCount]];
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+ }
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+ bindings.push(expressionRanges);
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+ } while (hasMoreVlq(reader, semi));
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+ }
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+ range.bindings = bindings;
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+ ranges.push(range);
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+ stack.push(range);
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+ }
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+ genLine++;
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+ reader.pos = semi + 1;
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+ } while (reader.pos < length);
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+ return ranges;
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+ }
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+ function encodeGeneratedRanges(ranges) {
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+ if (ranges.length === 0)
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+ return '';
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+ const writer = new StringWriter();
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+ for (let i = 0; i < ranges.length;) {
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+ i = _encodeGeneratedRanges(ranges, i, writer, [0, 0, 0, 0, 0, 0, 0]);
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+ }
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+ return writer.flush();
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+ }
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+ function _encodeGeneratedRanges(ranges, index, writer, state) {
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+ const range = ranges[index];
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+ const { 0: startLine, 1: startColumn, 2: endLine, 3: endColumn, isScope, callsite, bindings, } = range;
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+ if (state[0] < startLine) {
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+ catchupLine(writer, state[0], startLine);
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+ state[0] = startLine;
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+ state[1] = 0;
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+ }
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+ else if (index > 0) {
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+ writer.write(comma);
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+ }
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+ state[1] = encodeInteger(writer, range[1], state[1]);
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+ const fields = (range.length === 6 ? 0b0001 : 0) | (callsite ? 0b0010 : 0) | (isScope ? 0b0100 : 0);
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+ encodeInteger(writer, fields, 0);
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+ if (range.length === 6) {
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+ const { 4: sourcesIndex, 5: scopesIndex } = range;
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+ if (sourcesIndex !== state[2]) {
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+ state[3] = 0;
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+ }
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+ state[2] = encodeInteger(writer, sourcesIndex, state[2]);
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+ state[3] = encodeInteger(writer, scopesIndex, state[3]);
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+ }
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+ if (callsite) {
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+ const { 0: sourcesIndex, 1: callLine, 2: callColumn } = range.callsite;
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+ if (sourcesIndex !== state[4]) {
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+ state[5] = 0;
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+ state[6] = 0;
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+ }
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+ else if (callLine !== state[5]) {
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+ state[6] = 0;
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+ }
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+ state[4] = encodeInteger(writer, sourcesIndex, state[4]);
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+ state[5] = encodeInteger(writer, callLine, state[5]);
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+ state[6] = encodeInteger(writer, callColumn, state[6]);
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+ }
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+ if (bindings) {
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+ for (const binding of bindings) {
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+ if (binding.length > 1)
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+ encodeInteger(writer, -binding.length, 0);
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+ const expression = binding[0][0];
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+ encodeInteger(writer, expression, 0);
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+ let bindingStartLine = startLine;
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+ let bindingStartColumn = startColumn;
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+ for (let i = 1; i < binding.length; i++) {
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+ const expRange = binding[i];
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+ bindingStartLine = encodeInteger(writer, expRange[1], bindingStartLine);
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+ bindingStartColumn = encodeInteger(writer, expRange[2], bindingStartColumn);
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+ encodeInteger(writer, expRange[0], 0);
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+ }
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+ }
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+ }
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+ for (index++; index < ranges.length;) {
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+ const next = ranges[index];
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+ const { 0: l, 1: c } = next;
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+ if (l > endLine || (l === endLine && c >= endColumn)) {
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+ break;
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+ }
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+ index = _encodeGeneratedRanges(ranges, index, writer, state);
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+ }
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+ if (state[0] < endLine) {
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+ catchupLine(writer, state[0], endLine);
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+ state[0] = endLine;
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+ state[1] = 0;
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+ }
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+ else {
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+ writer.write(comma);
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+ }
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+ state[1] = encodeInteger(writer, endColumn, state[1]);
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+ return index;
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+ }
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+ function catchupLine(writer, lastLine, line) {
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+ do {
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+ writer.write(semicolon);
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+ } while (++lastLine < line);
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+ }
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+
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+ function decode(mappings) {
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+ const { length } = mappings;
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+ const reader = new StringReader(mappings);
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+ const decoded = [];
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+ let genColumn = 0;
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+ let sourcesIndex = 0;
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+ let sourceLine = 0;
|
|
|
|
+ let sourceColumn = 0;
|
|
|
|
+ let namesIndex = 0;
|
|
|
|
+ do {
|
|
|
|
+ const semi = reader.indexOf(';');
|
|
|
|
+ const line = [];
|
|
|
|
+ let sorted = true;
|
|
|
|
+ let lastCol = 0;
|
|
|
|
+ genColumn = 0;
|
|
|
|
+ while (reader.pos < semi) {
|
|
|
|
+ let seg;
|
|
|
|
+ genColumn = decodeInteger(reader, genColumn);
|
|
|
|
+ if (genColumn < lastCol)
|
|
|
|
+ sorted = false;
|
|
|
|
+ lastCol = genColumn;
|
|
|
|
+ if (hasMoreVlq(reader, semi)) {
|
|
|
|
+ sourcesIndex = decodeInteger(reader, sourcesIndex);
|
|
|
|
+ sourceLine = decodeInteger(reader, sourceLine);
|
|
|
|
+ sourceColumn = decodeInteger(reader, sourceColumn);
|
|
|
|
+ if (hasMoreVlq(reader, semi)) {
|
|
|
|
+ namesIndex = decodeInteger(reader, namesIndex);
|
|
|
|
+ seg = [genColumn, sourcesIndex, sourceLine, sourceColumn, namesIndex];
|
|
|
|
+ }
|
|
|
|
+ else {
|
|
|
|
+ seg = [genColumn, sourcesIndex, sourceLine, sourceColumn];
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ else {
|
|
|
|
+ seg = [genColumn];
|
|
|
|
+ }
|
|
|
|
+ line.push(seg);
|
|
|
|
+ reader.pos++;
|
|
|
|
+ }
|
|
|
|
+ if (!sorted)
|
|
|
|
+ sort(line);
|
|
|
|
+ decoded.push(line);
|
|
|
|
+ reader.pos = semi + 1;
|
|
|
|
+ } while (reader.pos <= length);
|
|
|
|
+ return decoded;
|
|
|
|
+ }
|
|
|
|
+ function sort(line) {
|
|
|
|
+ line.sort(sortComparator);
|
|
|
|
+ }
|
|
|
|
+ function sortComparator(a, b) {
|
|
|
|
+ return a[0] - b[0];
|
|
|
|
+ }
|
|
|
|
+ function encode(decoded) {
|
|
|
|
+ const writer = new StringWriter();
|
|
|
|
+ let sourcesIndex = 0;
|
|
|
|
+ let sourceLine = 0;
|
|
|
|
+ let sourceColumn = 0;
|
|
|
|
+ let namesIndex = 0;
|
|
|
|
+ for (let i = 0; i < decoded.length; i++) {
|
|
|
|
+ const line = decoded[i];
|
|
|
|
+ if (i > 0)
|
|
|
|
+ writer.write(semicolon);
|
|
|
|
+ if (line.length === 0)
|
|
|
|
+ continue;
|
|
|
|
+ let genColumn = 0;
|
|
|
|
+ for (let j = 0; j < line.length; j++) {
|
|
|
|
+ const segment = line[j];
|
|
|
|
+ if (j > 0)
|
|
|
|
+ writer.write(comma);
|
|
|
|
+ genColumn = encodeInteger(writer, segment[0], genColumn);
|
|
|
|
+ if (segment.length === 1)
|
|
|
|
+ continue;
|
|
|
|
+ sourcesIndex = encodeInteger(writer, segment[1], sourcesIndex);
|
|
|
|
+ sourceLine = encodeInteger(writer, segment[2], sourceLine);
|
|
|
|
+ sourceColumn = encodeInteger(writer, segment[3], sourceColumn);
|
|
|
|
+ if (segment.length === 4)
|
|
|
|
+ continue;
|
|
|
|
+ namesIndex = encodeInteger(writer, segment[4], namesIndex);
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ return writer.flush();
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ exports.decode = decode;
|
|
|
|
+ exports.decodeGeneratedRanges = decodeGeneratedRanges;
|
|
|
|
+ exports.decodeOriginalScopes = decodeOriginalScopes;
|
|
|
|
+ exports.encode = encode;
|
|
|
|
+ exports.encodeGeneratedRanges = encodeGeneratedRanges;
|
|
|
|
+ exports.encodeOriginalScopes = encodeOriginalScopes;
|
|
|
|
+
|
|
|
|
+ Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
+
|
|
|
|
+}));
|
|
|
|
+//# sourceMappingURL=sourcemap-codec.umd.js.map
|