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21
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MIT License
Copyright (c) 2021 SEEK
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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<img src="https://raw.githubusercontent.com/seek-oss/capsize/HEAD/images/capsize-header.png" alt="Capsize" title="Capsize" width="443px" />
<br/>
# @capsizecss/unpack
Unpack the capsize font metrics directly from a font file.
```bash
npm install @capsizecss/unpack
```
- [Usage](#usage)
- [fromBuffer](#frombuffer)
- [fromBlob](#fromblob)
- [fromUrl](#fromurl)
- [fromFile](#fromfile)
- [Options](#options)
- [postscriptName](#postscriptname)
- [Font Metrics](#font-metrics)
## Usage
### `fromBuffer`
Takes a buffer and returns the resolved [font metrics](#font-metrics).
```ts
import { fromBuffer } from '@capsizecss/unpack';
const metrics = await fromBuffer(buffer);
```
### `fromBlob`
Takes a file blob and returns the resolved [font metrics](#font-metrics).
```ts
import { fromBlob } from '@capsizecss/unpack';
const metrics = await fromBlob(file);
```
### `fromUrl`
Takes a url string and returns the resolved [font metrics](#font-metrics).
```ts
import { fromUrl } from '@capsizecss/unpack';
const metrics = await fromUrl(url);
```
### `fromFile`
Takes a file path string and returns the resolved [font metrics](#font-metrics).
```ts
import { fromFile } from '@capsizecss/unpack';
const metrics = await fromFile(filePath);
```
## Options
All of the above APIs accept an optional second parameter with the following options:
#### `postscriptName`
Capsize can extract the metrics for a single font from a TrueType Collection (TTC) file by providing the `postscriptName`.
```ts
import { fromFile } from '@capsizecss/unpack';
const metrics = await fromFile('AvenirNext.ttc', {
postscriptName: 'AvenirNext-Bold',
});
```
## Font metrics
The font metrics object returned contains the following properties:
| Property | Type | Description |
| -------------- | ------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| familyName | string | The font’s family name as authored by font creator |
| fullName | string | The font’s full name as authored by font creator |
| postscriptName | string | The font’s unique PostScript name as authored by font creator |
| category | string | The style of the font: serif, sans-serif, monospace, display, or handwriting. |
| capHeight | number | The height of capital letters above the baseline |
| ascent | number | The height of the ascenders above baseline |
| descent | number | The descent of the descenders below baseline |
| lineGap | number | The amount of space included between lines |
| unitsPerEm | number | The size of the font’s internal coordinate grid |
| xHeight | number | The height of the main body of lower case letters above baseline |
| xWidthAvg | number | The average width of character glyphs in the font for the selected unicode subset. Calculated [based on character frequencies in written text], falling back to the built in `xAvgCharWidth` from the OS/2 table. |
| subsets | {<br/>[subset]: { xWidthAvg: number }<br/>} | A lookup of the `xWidthAvg` metric by subset (see [supported subsets]) |
[based on character frequencies in written text]: ../metrics/README.md#how-xwidthavg-is-calculated
[supported subsets]: ../metrics/README.md#subsets
## Thanks
- [Devon Govett](https://github.com/devongovett) for creating [Fontkit](https://github.com/foliojs/fontkit), which does all the heavy lifting of extracting the font metrics under the covers.
- [SEEK](https://www.seek.com.au) for giving us the space to do interesting work.
## License
MIT.

321
node_modules/@capsizecss/unpack/dist/index.cjs generated vendored Normal file
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"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const blobToBuffer = require("blob-to-buffer");
const fontkit = require("fontkit");
const _interopDefaultCompat = (e) => e && typeof e === "object" && "default" in e ? e : { default: e };
function _interopNamespaceCompat(e) {
if (e && typeof e === "object" && "default" in e)
return e;
const n = Object.create(null, { [Symbol.toStringTag]: { value: "Module" } });
if (e) {
for (const k in e) {
if (k !== "default") {
const d = Object.getOwnPropertyDescriptor(e, k);
Object.defineProperty(n, k, d.get ? d : {
enumerable: true,
get: () => e[k]
});
}
}
}
n.default = e;
return Object.freeze(n);
}
const blobToBuffer__default = /* @__PURE__ */ _interopDefaultCompat(blobToBuffer);
const fontkit__namespace = /* @__PURE__ */ _interopNamespaceCompat(fontkit);
const weightings = {
"latin": {
"0": 53e-4,
"1": 23e-4,
"2": 26e-4,
"3": 1e-3,
"4": 8e-4,
"5": 15e-4,
"6": 7e-4,
"7": 5e-4,
"8": 7e-4,
"9": 6e-4,
",": 83e-4,
" ": 0.154,
"t": 0.0672,
"h": 0.0351,
"e": 0.0922,
"o": 0.0571,
"f": 0.017,
"P": 23e-4,
"p": 0.0163,
"l": 0.0304,
"'": 14e-4,
"s": 0.0469,
"R": 15e-4,
"u": 0.0207,
"b": 0.0114,
"i": 0.0588,
"c": 0.0232,
"C": 31e-4,
"n": 0.0578,
"a": 0.0668,
"d": 0.0298,
"y": 0.0123,
"w": 0.011,
"B": 2e-3,
"r": 0.0526,
"z": 11e-4,
"G": 11e-4,
"j": 9e-4,
"T": 41e-4,
".": 79e-4,
"L": 12e-4,
"k": 46e-4,
"m": 0.0181,
"]": 7e-4,
"J": 9e-4,
"F": 15e-4,
"v": 76e-4,
"g": 0.0155,
"A": 4e-3,
"N": 14e-4,
"-": 18e-4,
"H": 13e-4,
"D": 13e-4,
"M": 25e-4,
"I": 22e-4,
"E": 11e-4,
'"': 12e-4,
"S": 41e-4,
"(": 1e-3,
")": 1e-3,
"x": 25e-4,
"W": 12e-4,
"Q": 1e-4,
"Y": 3e-4,
"q": 8e-4,
"V": 5e-4,
"á": 1e-4,
"K": 7e-4,
"U": 16e-4,
"=": 7e-4,
"[": 21e-4,
"O": 9e-4,
"é": 1e-4,
"$": 2e-4,
":": 8e-4,
"|": 38e-4,
"/": 1e-4,
"%": 1e-4,
"Z": 2e-4,
";": 1e-4,
"X": 1e-4
},
"thai": {
"ส": 0.0258,
"ว": 0.0372,
"น": 0.0711,
"บ": 0.0258,
"จ": 0.0169,
"า": 0.1024,
"ก": 0.0552,
"เ": 0.0419,
"ร": 0.0873,
"ม": 0.0416,
"ค": 0.0214,
"ำ": 97e-4,
"ข": 0.0127,
"อ": 0.0459,
"ป": 0.0204,
"ด": 0.0271,
"ใ": 0.0109,
"ภ": 46e-4,
"ท": 0.0311,
"พ": 0.0175,
"ฤ": 9e-4,
"ษ": 42e-4,
"ศ": 63e-4,
"ะ": 0.0255,
"ช": 0.0158,
"แ": 0.0158,
"ล": 0.0339,
"ง": 0.0433,
"ย": 0.0345,
"ห": 0.0197,
"ฝ": 6e-4,
"ต": 0.0239,
"โ": 77e-4,
"ญ": 39e-4,
"ณ": 71e-4,
"ผ": 77e-4,
"ไ": 0.0111,
"ฯ": 7e-4,
"ฟ": 44e-4,
"ธ": 68e-4,
"ถ": 61e-4,
"ฐ": 33e-4,
"ซ": 46e-4,
"ฉ": 23e-4,
"ฑ": 4e-4,
"ฆ": 2e-4,
"ฬ": 3e-4,
"ฏ": 2e-4,
"ฎ": 3e-4,
"ฒ": 12e-4,
"ๆ": 3e-4,
"ฮ": 4e-4,
"๒": 1e-4,
"๕": 1e-4
}
};
const supportedSubsets = Object.keys(weightings);
const weightingForCharacter = (character, subset) => {
if (!Object.keys(weightings[subset]).includes(character)) {
throw new Error(`No weighting specified for character: “${character}”`);
}
return weightings[subset][character];
};
const avgWidthForSubset = (font, subset) => {
const sampleString = Object.keys(weightings[subset]).join("");
const glyphs = font.glyphsForString(sampleString);
const weightedWidth = glyphs.reduce((sum, glyph, index) => {
const character = sampleString.charAt(index);
let charWidth = font["OS/2"].xAvgCharWidth;
try {
charWidth = glyph.advanceWidth;
} catch (e) {
console.warn(
`Couldn’t read 'advanceWidth' for character “${character === " " ? "<space>" : character}” from “${font.familyName}”. Falling back to “xAvgCharWidth”.`
);
}
if (glyph.isMark) {
return sum;
}
return sum + charWidth * weightingForCharacter(character, subset);
}, 0);
return Math.round(weightedWidth);
};
const unpackMetricsFromFont = (font) => {
const {
capHeight,
ascent,
descent,
lineGap,
unitsPerEm,
familyName,
fullName,
postscriptName,
xHeight
} = font;
const subsets = supportedSubsets.reduce(
(acc, subset) => ({
...acc,
[subset]: {
xWidthAvg: avgWidthForSubset(font, subset)
}
}),
{}
);
return {
familyName,
fullName,
postscriptName,
capHeight,
ascent,
descent,
lineGap,
unitsPerEm,
xHeight,
xWidthAvg: subsets.latin.xWidthAvg,
subsets
};
};
const handleCollectionErrors = ({
font,
postscriptName,
apiName,
apiParamName
}) => {
if (postscriptName && font === null) {
throw new Error(
[
`The provided \`postscriptName\` of “${postscriptName}” cannot be found in the provided font collection.
`,
"Run the same command without specifying a `postscriptName` in the options to see the available names in the collection.",
"For example:",
"------------------------------------------",
`const metrics = await ${apiName}('<${apiParamName}>');`,
"------------------------------------------\n",
""
].join("\n")
);
}
if (font !== null && "fonts" in font && Array.isArray(font.fonts)) {
const availableNames = font.fonts.map((f) => f.postscriptName);
throw new Error(
[
"Metrics cannot be unpacked from a font collection.\n",
"Provide either a single font or specify a `postscriptName` to extract from the collection via the options.",
"For example:",
"------------------------------------------",
`const metrics = await ${apiName}('<${apiParamName}>', {`,
` postscriptName: '${availableNames[0]}'`,
"});",
"------------------------------------------\n",
"Available `postscriptNames` in this font collection are:",
...availableNames.map((fontName) => ` - ${fontName}`),
""
].join("\n")
);
}
};
const fromFile = (path, options) => {
const { postscriptName } = options || {};
return fontkit__namespace.open(path, postscriptName).then((font) => {
handleCollectionErrors({
font,
postscriptName,
apiName: "fromFile",
apiParamName: "path"
});
return unpackMetricsFromFont(font);
});
};
const _fromBuffer = async (buffer, apiName, apiParamName, options) => {
const { postscriptName } = options || {};
const fontkitFont = fontkit__namespace.create(buffer, postscriptName);
handleCollectionErrors({
font: fontkitFont,
postscriptName,
apiName,
apiParamName
});
return unpackMetricsFromFont(fontkitFont);
};
const fromBuffer = async (buffer, options) => {
return _fromBuffer(buffer, "fromBuffer", "buffer", options);
};
const fromBlob = async (blob, options) => {
return new Promise((resolve, reject) => {
blobToBuffer__default.default(blob, (err, buffer) => {
if (err) {
return reject(err);
}
try {
resolve(_fromBuffer(buffer, "fromBlob", "blob", options));
} catch (e) {
reject(e);
}
});
});
};
const fromUrl = async (url, options) => {
const response = await fetch(url);
if (typeof window === "undefined") {
const data = await response.arrayBuffer();
return _fromBuffer(Buffer.from(data), "fromUrl", "url", options);
}
const blob = await response.blob();
return fromBlob(blob, options);
};
exports.fromBlob = fromBlob;
exports.fromBuffer = fromBuffer;
exports.fromFile = fromFile;
exports.fromUrl = fromUrl;
exports.supportedSubsets = supportedSubsets;

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import { Font as Font$1 } from 'fontkit';
declare const _default: {
latin: {
"0": number;
"1": number;
"2": number;
"3": number;
"4": number;
"5": number;
"6": number;
"7": number;
"8": number;
"9": number;
",": number;
" ": number;
t: number;
h: number;
e: number;
o: number;
f: number;
P: number;
p: number;
l: number;
"'": number;
s: number;
R: number;
u: number;
b: number;
i: number;
c: number;
C: number;
n: number;
a: number;
d: number;
y: number;
w: number;
B: number;
r: number;
z: number;
G: number;
j: number;
T: number;
".": number;
L: number;
k: number;
m: number;
"]": number;
J: number;
F: number;
v: number;
g: number;
A: number;
N: number;
"-": number;
H: number;
D: number;
M: number;
I: number;
E: number;
"\"": number;
S: number;
"(": number;
")": number;
x: number;
W: number;
Q: number;
Y: number;
q: number;
V: number;
á: number;
K: number;
U: number;
"=": number;
"[": number;
O: number;
é: number;
$: number;
":": number;
"|": number;
"/": number;
"%": number;
Z: number;
";": number;
X: number;
};
thai: {
ส: number;
ว: number;
น: number;
บ: number;
จ: number;
า: number;
ก: number;
เ: number;
ร: number;
ม: number;
ค: number;
ำ: number;
ข: number;
อ: number;
ป: number;
ด: number;
ใ: number;
ภ: number;
ท: number;
พ: number;
ฤ: number;
ษ: number;
ศ: number;
ะ: number;
ช: number;
แ: number;
ล: number;
ง: number;
ย: number;
ห: number;
ฝ: number;
ต: number;
โ: number;
ญ: number;
ณ: number;
ผ: number;
ไ: number;
ฯ: number;
ฟ: number;
ธ: number;
ถ: number;
ฐ: number;
ซ: number;
ฉ: number;
ฑ: number;
ฆ: number;
ฬ: number;
ฏ: number;
ฎ: number;
ฒ: number;
ๆ: number;
ฮ: number;
"\u0E52": number;
"\u0E55": number;
};
};
type SupportedSubsets = keyof typeof _default;
declare const supportedSubsets: ("latin" | "thai")[];
declare const unpackMetricsFromFont: (font: Font$1) => {
familyName: string;
fullName: string;
postscriptName: string;
capHeight: number;
ascent: number;
descent: number;
lineGap: number;
unitsPerEm: number;
xHeight: number;
xWidthAvg: number;
subsets: Record<"latin" | "thai", {
xWidthAvg: number;
}>;
};
type Font = ReturnType<typeof unpackMetricsFromFont>;
interface Options {
postscriptName?: string;
}
declare const fromFile: (path: string, options?: Options) => Promise<Font>;
declare const fromBuffer: (buffer: Buffer, options?: Options) => Promise<Font>;
declare const fromBlob: (blob: Blob, options?: Options) => Promise<Font>;
declare const fromUrl: (url: string, options?: Options) => Promise<Font>;
export { type Font, type SupportedSubsets, fromBlob, fromBuffer, fromFile, fromUrl, supportedSubsets };

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import { Font as Font$1 } from 'fontkit';
declare const _default: {
latin: {
"0": number;
"1": number;
"2": number;
"3": number;
"4": number;
"5": number;
"6": number;
"7": number;
"8": number;
"9": number;
",": number;
" ": number;
t: number;
h: number;
e: number;
o: number;
f: number;
P: number;
p: number;
l: number;
"'": number;
s: number;
R: number;
u: number;
b: number;
i: number;
c: number;
C: number;
n: number;
a: number;
d: number;
y: number;
w: number;
B: number;
r: number;
z: number;
G: number;
j: number;
T: number;
".": number;
L: number;
k: number;
m: number;
"]": number;
J: number;
F: number;
v: number;
g: number;
A: number;
N: number;
"-": number;
H: number;
D: number;
M: number;
I: number;
E: number;
"\"": number;
S: number;
"(": number;
")": number;
x: number;
W: number;
Q: number;
Y: number;
q: number;
V: number;
á: number;
K: number;
U: number;
"=": number;
"[": number;
O: number;
é: number;
$: number;
":": number;
"|": number;
"/": number;
"%": number;
Z: number;
";": number;
X: number;
};
thai: {
ส: number;
ว: number;
น: number;
บ: number;
จ: number;
า: number;
ก: number;
เ: number;
ร: number;
ม: number;
ค: number;
ำ: number;
ข: number;
อ: number;
ป: number;
ด: number;
ใ: number;
ภ: number;
ท: number;
พ: number;
ฤ: number;
ษ: number;
ศ: number;
ะ: number;
ช: number;
แ: number;
ล: number;
ง: number;
ย: number;
ห: number;
ฝ: number;
ต: number;
โ: number;
ญ: number;
ณ: number;
ผ: number;
ไ: number;
ฯ: number;
ฟ: number;
ธ: number;
ถ: number;
ฐ: number;
ซ: number;
ฉ: number;
ฑ: number;
ฆ: number;
ฬ: number;
ฏ: number;
ฎ: number;
ฒ: number;
ๆ: number;
ฮ: number;
"\u0E52": number;
"\u0E55": number;
};
};
type SupportedSubsets = keyof typeof _default;
declare const supportedSubsets: ("latin" | "thai")[];
declare const unpackMetricsFromFont: (font: Font$1) => {
familyName: string;
fullName: string;
postscriptName: string;
capHeight: number;
ascent: number;
descent: number;
lineGap: number;
unitsPerEm: number;
xHeight: number;
xWidthAvg: number;
subsets: Record<"latin" | "thai", {
xWidthAvg: number;
}>;
};
type Font = ReturnType<typeof unpackMetricsFromFont>;
interface Options {
postscriptName?: string;
}
declare const fromFile: (path: string, options?: Options) => Promise<Font>;
declare const fromBuffer: (buffer: Buffer, options?: Options) => Promise<Font>;
declare const fromBlob: (blob: Blob, options?: Options) => Promise<Font>;
declare const fromUrl: (url: string, options?: Options) => Promise<Font>;
export { type Font, type SupportedSubsets, fromBlob, fromBuffer, fromFile, fromUrl, supportedSubsets };

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node_modules/@capsizecss/unpack/dist/index.mjs generated vendored Normal file
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import blobToBuffer from "blob-to-buffer";
import * as fontkit from "fontkit";
const weightings = {
"latin": {
"0": 53e-4,
"1": 23e-4,
"2": 26e-4,
"3": 1e-3,
"4": 8e-4,
"5": 15e-4,
"6": 7e-4,
"7": 5e-4,
"8": 7e-4,
"9": 6e-4,
",": 83e-4,
" ": 0.154,
"t": 0.0672,
"h": 0.0351,
"e": 0.0922,
"o": 0.0571,
"f": 0.017,
"P": 23e-4,
"p": 0.0163,
"l": 0.0304,
"'": 14e-4,
"s": 0.0469,
"R": 15e-4,
"u": 0.0207,
"b": 0.0114,
"i": 0.0588,
"c": 0.0232,
"C": 31e-4,
"n": 0.0578,
"a": 0.0668,
"d": 0.0298,
"y": 0.0123,
"w": 0.011,
"B": 2e-3,
"r": 0.0526,
"z": 11e-4,
"G": 11e-4,
"j": 9e-4,
"T": 41e-4,
".": 79e-4,
"L": 12e-4,
"k": 46e-4,
"m": 0.0181,
"]": 7e-4,
"J": 9e-4,
"F": 15e-4,
"v": 76e-4,
"g": 0.0155,
"A": 4e-3,
"N": 14e-4,
"-": 18e-4,
"H": 13e-4,
"D": 13e-4,
"M": 25e-4,
"I": 22e-4,
"E": 11e-4,
'"': 12e-4,
"S": 41e-4,
"(": 1e-3,
")": 1e-3,
"x": 25e-4,
"W": 12e-4,
"Q": 1e-4,
"Y": 3e-4,
"q": 8e-4,
"V": 5e-4,
"á": 1e-4,
"K": 7e-4,
"U": 16e-4,
"=": 7e-4,
"[": 21e-4,
"O": 9e-4,
"é": 1e-4,
"$": 2e-4,
":": 8e-4,
"|": 38e-4,
"/": 1e-4,
"%": 1e-4,
"Z": 2e-4,
";": 1e-4,
"X": 1e-4
},
"thai": {
"ส": 0.0258,
"ว": 0.0372,
"น": 0.0711,
"บ": 0.0258,
"จ": 0.0169,
"า": 0.1024,
"ก": 0.0552,
"เ": 0.0419,
"ร": 0.0873,
"ม": 0.0416,
"ค": 0.0214,
"ำ": 97e-4,
"ข": 0.0127,
"อ": 0.0459,
"ป": 0.0204,
"ด": 0.0271,
"ใ": 0.0109,
"ภ": 46e-4,
"ท": 0.0311,
"พ": 0.0175,
"ฤ": 9e-4,
"ษ": 42e-4,
"ศ": 63e-4,
"ะ": 0.0255,
"ช": 0.0158,
"แ": 0.0158,
"ล": 0.0339,
"ง": 0.0433,
"ย": 0.0345,
"ห": 0.0197,
"ฝ": 6e-4,
"ต": 0.0239,
"โ": 77e-4,
"ญ": 39e-4,
"ณ": 71e-4,
"ผ": 77e-4,
"ไ": 0.0111,
"ฯ": 7e-4,
"ฟ": 44e-4,
"ธ": 68e-4,
"ถ": 61e-4,
"ฐ": 33e-4,
"ซ": 46e-4,
"ฉ": 23e-4,
"ฑ": 4e-4,
"ฆ": 2e-4,
"ฬ": 3e-4,
"ฏ": 2e-4,
"ฎ": 3e-4,
"ฒ": 12e-4,
"ๆ": 3e-4,
"ฮ": 4e-4,
"๒": 1e-4,
"๕": 1e-4
}
};
const supportedSubsets = Object.keys(weightings);
const weightingForCharacter = (character, subset) => {
if (!Object.keys(weightings[subset]).includes(character)) {
throw new Error(`No weighting specified for character: “${character}”`);
}
return weightings[subset][character];
};
const avgWidthForSubset = (font, subset) => {
const sampleString = Object.keys(weightings[subset]).join("");
const glyphs = font.glyphsForString(sampleString);
const weightedWidth = glyphs.reduce((sum, glyph, index) => {
const character = sampleString.charAt(index);
let charWidth = font["OS/2"].xAvgCharWidth;
try {
charWidth = glyph.advanceWidth;
} catch (e) {
console.warn(
`Couldn’t read 'advanceWidth' for character “${character === " " ? "<space>" : character}” from “${font.familyName}”. Falling back to “xAvgCharWidth”.`
);
}
if (glyph.isMark) {
return sum;
}
return sum + charWidth * weightingForCharacter(character, subset);
}, 0);
return Math.round(weightedWidth);
};
const unpackMetricsFromFont = (font) => {
const {
capHeight,
ascent,
descent,
lineGap,
unitsPerEm,
familyName,
fullName,
postscriptName,
xHeight
} = font;
const subsets = supportedSubsets.reduce(
(acc, subset) => ({
...acc,
[subset]: {
xWidthAvg: avgWidthForSubset(font, subset)
}
}),
{}
);
return {
familyName,
fullName,
postscriptName,
capHeight,
ascent,
descent,
lineGap,
unitsPerEm,
xHeight,
xWidthAvg: subsets.latin.xWidthAvg,
subsets
};
};
const handleCollectionErrors = ({
font,
postscriptName,
apiName,
apiParamName
}) => {
if (postscriptName && font === null) {
throw new Error(
[
`The provided \`postscriptName\` of “${postscriptName}” cannot be found in the provided font collection.
`,
"Run the same command without specifying a `postscriptName` in the options to see the available names in the collection.",
"For example:",
"------------------------------------------",
`const metrics = await ${apiName}('<${apiParamName}>');`,
"------------------------------------------\n",
""
].join("\n")
);
}
if (font !== null && "fonts" in font && Array.isArray(font.fonts)) {
const availableNames = font.fonts.map((f) => f.postscriptName);
throw new Error(
[
"Metrics cannot be unpacked from a font collection.\n",
"Provide either a single font or specify a `postscriptName` to extract from the collection via the options.",
"For example:",
"------------------------------------------",
`const metrics = await ${apiName}('<${apiParamName}>', {`,
` postscriptName: '${availableNames[0]}'`,
"});",
"------------------------------------------\n",
"Available `postscriptNames` in this font collection are:",
...availableNames.map((fontName) => ` - ${fontName}`),
""
].join("\n")
);
}
};
const fromFile = (path, options) => {
const { postscriptName } = options || {};
return fontkit.open(path, postscriptName).then((font) => {
handleCollectionErrors({
font,
postscriptName,
apiName: "fromFile",
apiParamName: "path"
});
return unpackMetricsFromFont(font);
});
};
const _fromBuffer = async (buffer, apiName, apiParamName, options) => {
const { postscriptName } = options || {};
const fontkitFont = fontkit.create(buffer, postscriptName);
handleCollectionErrors({
font: fontkitFont,
postscriptName,
apiName,
apiParamName
});
return unpackMetricsFromFont(fontkitFont);
};
const fromBuffer = async (buffer, options) => {
return _fromBuffer(buffer, "fromBuffer", "buffer", options);
};
const fromBlob = async (blob, options) => {
return new Promise((resolve, reject) => {
blobToBuffer(blob, (err, buffer) => {
if (err) {
return reject(err);
}
try {
resolve(_fromBuffer(buffer, "fromBlob", "blob", options));
} catch (e) {
reject(e);
}
});
});
};
const fromUrl = async (url, options) => {
const response = await fetch(url);
if (typeof window === "undefined") {
const data = await response.arrayBuffer();
return _fromBuffer(Buffer.from(data), "fromUrl", "url", options);
}
const blob = await response.blob();
return fromBlob(blob, options);
};
export {
fromBlob,
fromBuffer,
fromFile,
fromUrl,
supportedSubsets
};

62
node_modules/@capsizecss/unpack/package.json generated vendored Normal file
View File

@@ -0,0 +1,62 @@
{
"name": "@capsizecss/unpack",
"version": "2.4.0",
"description": "Unpack capsize font metrics from fonts",
"keywords": [
"capsize",
"leading trim",
"white space",
"baseline",
"basekick",
"cap height",
"typography",
"line gap",
"leading"
],
"repository": {
"type": "git",
"url": "https://github.com/seek-oss/capsize.git",
"directory": "packages/unpack"
},
"license": "MIT",
"author": {
"name": "Michael Taranto",
"homepage": "https://github.com/michaeltaranto"
},
"exports": {
".": {
"types": {
"import": "./dist/index.d.mts",
"require": "./dist/index.d.ts"
},
"import": "./dist/index.mjs",
"require": "./dist/index.cjs"
},
"./package.json": "./package.json"
},
"main": "./dist/index.cjs",
"module": "./dist/index.mjs",
"types": "./dist/index.d.ts",
"files": [
"dist"
],
"dependencies": {
"blob-to-buffer": "^1.2.8",
"cross-fetch": "^3.0.4",
"fontkit": "^2.0.2"
},
"devDependencies": {
"@types/blob-to-buffer": "^1.2.0",
"@types/fontkit": "^2.0.1",
"@types/node": "^20.11.13",
"fast-xml-parser": "^4.3.2",
"sort-keys": "^5.0.0",
"tsx": "^4.7.0",
"typescript": "^5.3.3"
},
"scripts": {
"build": "crackle package",
"dev": "crackle dev --shim=none",
"generate": "tsx scripts/generate-weightings"
}
}